There's a moment every car owner dreads: the shop calls, gives you a number, and you have no way to know if it's fair. Multiply that moment by every repair for the rest of your life, and you start to see the problem we're trying to fix.
123 Auto Guides started with a simple observation, drawn from 20+ years of hands-on automotive work: the people who understand their cars best are the ones who spend the least fixing them. Not because they do all the repairs themselves, but because they know what questions to ask, what a fair estimate looks like, and which small problems turn into expensive ones if ignored.

That knowledge shouldn't be locked behind a mechanic's toolbox. So we're building it out in plain language: free checklists and guides to start, and in-depth digital guides for the topics that matter most.
Every piece of it follows the same rule: explain the why, not just the what. If you finish reading something from 123 Auto Guides and think "I understand my car better than I did yesterday," we did our job.
Start with our free resources, no cost, no catch.
Every guide, in plain English, yours to keep.
Know Your Car. Save on Repairs.
Practical guides that help drivers diagnose problems, avoid costly repairs, and maintain their vehicles with confidence.
Each guide explains one area in plain language, from warning lights to brakes and electric cars.
Browse all guides →Short checklists you can print and keep in the car, ready in seconds.
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